- Installed eGPU setup obtained By Nando.
- Removed old nvidia graphics drivers with DDU;
- Restarted notebook, boot over Setup 1.35
- Disabled the internal NVidia internal GPU (dGPU);
- Tryed to detect the new videocard by connecting all the components described above using the Universal Notebook charger and the mPCIe cable to an extra mPCIe slot near WWan entrance who have a label indicating "TV".

The problem:

- For some reason the EGPU was not detected by notebook. It turns on by showing the green light and the videocard cooler activating, but only these happens.

Tries:

1 - Tried to boot up notebook with all equip connected. Got a blank screen who interrupts boot sequence. Same result when changing the PTD switch to "7s" or "15s";
2 - Tried to boot over Windows and connect the mPCIe cable. The eGPU isn't recognized neither;
3 - Tried to boot over setup 1.35, by the menu command choice and hitting f5 after hotswapping the free mPCIe slot, or the WWAN slot. Same response.

Trick: Changing the PSU Universal Notebook Charger for an ATX Thermaltake 360W with the paperclip trick described by @himansh512 really made the videocard detectable.

I strongly recommend the @himansh512 tutorial described here. I also ordered an Dell PSU as described in tutorial for make my desk more organized.

An addition who may i put here is for exclusively for my videocard model, an Geforce GTX 1050. That's an 2016 videocard, that one isn't compatible with Driver 372.90, who was reported here, given an 43 error. Well, i have an modified bios (downloadable here) who made me able to edit the mpcie settings like hotplugging (turned on) and disable all references by error reporting. After did that, i got no problems at all and have a great performance in comparison to internal Nvidia GPU. For reference, i installed the first driver release (desktop version 375.63) for this videocard.

I will made new changes in my configuration (i still insisting in test the WWAN/TV mpcie slot just for fun after i made it enabled via modified bios), but the main objective now is complete. Thanks all for supporting!

Thanks for support guys, i'll lend after tomorrow an atx 450w psu for more testing until i buy a new one, i'm very interested in @himansh comment about jumpeable Dell DA-2 adapter 220W, that psu seems nice, but my budget give me a gap until next week I'll do more tests in a few days and update this topic, thanks again.

Within a few days , my egpu adapter exp gdc beast would arrive and I'd be using an asus 1050ti. I'm confused as to what power supply to use, I stay in a hostel and any desktop atx PSU would use up limited table space and would be bulky. I've read that the gdc beast can take in 150 watts from the DC in port. The card's tdp is 75w ,so could you please recommend an appropriate AC/DC adapter? would a Dell 130w charger suffice?

@Jaswant Panchumarti, the 220w Dell DA-2 PSU is readily available in most markets at at affordable cost and comes recommended. The EXP GDC has an 8pin input port especially for it, fanning out extra power via a 6-pin plug to PCIe power connectors. 220W giving lots of headroom for even more powerful video cards should you require it. Only downside is it's a rather large and heavy adapter.